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Northwest Africa 14171
Basic information Name: Northwest Africa 14171
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14171
Observed fall: No
Year found: 2020
Country: Niger
Mass:help 271 g
Recommended:  L-melt rock    [explanation]

This is 1 of 44 approved meteorites classified as L-melt rock.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 6 Oct 2021
Writeup from MB 110:

Northwest Africa 14171 (NWA 14171)


Purchased: 2020 Feb

Classification: Ordinary chondrite (L, melt rock)

History: Purchased by Mbark Arjdal in February 2020 from a dealer in Niger.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Extremely fine-grained assemblage consisting mainly of silicate minerals plus dispersed aggregates of metal+troilite spheres. Some isolated larger silicate mineral grains and a few faint relict chondrules are also present.

Geochemistry: Olivine (Fa23.5±1.0, range Fa21.9-24.2, N = 5), low-Ca pyroxene (Fs18.6±2.8Wo1.8±0.5, range Fs14.4-21.5Wo1.1-2.5, N = 7).

Classification: Ordinary chondrite (L-melt rock).

Specimens: 30.5 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  Table 0
  Line 0:
Place of purchase:Niger
Date:P 2020 Feb
Mass (g):271
Class:L-melt rock
Shock stage:S6
Weathering grade:W0/1
Fayalite (mol%):23.5±1.0
Ferrosilite (mol%):18.6±2.8
Wollastonite (mol%):1.8±0.5
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):30.5
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj H27; submitted by A. Irving
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 100 approved meteorites from Niger (plus 5 unapproved names)

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